806163353956 has 27 divisors (see below), whose sum is σ = 1431162297523. Its totient is φ = 397341619640.

The previous prime is 806163353899. The next prime is 806163353987. The reversal of 806163353956 is 659353361608.

It is a happy number.

The square root of 806163353956 is 897866.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 806163353897 and 806163353906.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 127493811 + ... + 127500133.

Almost surely, 2^806163353956 is an apocalyptic number.

806163353956 is the 897866-th square number.

It is an amenable number.

806163353956 is a deficient number, since it is larger than the sum of its proper divisors (624998943567).

806163353956 is an frugal number, since it uses more digits than its factorization.

806163353956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12792 (or 6396 counting only the distinct ones).

The product of its (nonzero) digits is 10497600, while the sum is 55.

The spelling of 806163353956 in words is "eight hundred six billion, one hundred sixty-three million, three hundred fifty-three thousand, nine hundred fifty-six".